Extension obstetrical instrument.



L. GosHoRNv. EXTENSION OBSTETRIGAL INSTRUMENT.

APPLIUATIONJILED FEB. 16, 1910.

Patented J une 28, 1910.

2 SHEETS-SHEET l.

L. GOSHORN. EXTENSION OBSTETRIGAL INSTRUMENT.

APPLICATION FILED FBBJG, 1910.

Patented June 28, 1910.

2 SHEETS-SHEET 2.

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il (l *riferi LEQNAED @GSH-ORN, l? VIAGO,

EXTETSGN BSTETRICAL XNSTRUIVIENT.

Specification of Letters Patent.

application filed. February 1G, 1910. Serial No. 544,265.

To el? whom 'h3 may concern:

known that i, laioNAno GosnonN, a izen oi the United States, residingr at. in the county of McLennan and State have invented a new and useful sion. @listetrical instrument; and do ,f declare the following to he a full,

enact description oit' the inven- "s will enable others skilled in the appertains to make' and use tion about to he set forth and longs to 'the art of surgical inor appliances, and, particularly to an extensible ohstetrieal instrupertains pted :tor use in performing various nient, ada operatioi ii g p.. niry ohject of the invention is to provide an instrument. of this character, which is niade extensible, in order that the u" may ohviate the use of one or more isihle obstetrical instruments are necessary in all operations at t which the pres it tune). By the use ot this 1mpi 'ed exiensilile instrinnent, a surgeon, at certain periods, may perform his operations ly u `,iency than heretofore, by y adjusting the handles, with regard to the oscillatingF jaws ot' the dcvice ln this specification and the drawings annexed hereto, a particular' design of device is adhered to, hutthe invention is not to he confined (o this particular design.

"the device in its actual reduction to practice may require the right thereto helongs to the applicant, provided such changes and variations are comj'irehci:ded hy the appended claims.

Further ohjects and combinations and arrangement of parts will be hereinafter more fully set forth and pointed out inthe appended claims j' ,ln the drawings, Aliigure'l is a perspective view of the extensible instrument, showing the manner ot' applicationx Fig. 2 is a plan view ol the instrument showing the jaws partially open. Fig. 3 is a sectional view through the instrument, in order to show the connection between the two jaws, and to ,further disclose the nianncr of adjustability or the extension ol the jaws. Af itudirral sectional view through the inemhers l and Figa also a longitudinal changes and variations;v

Fig. l isa lonsectional view taken on line 5 of Fig. 4, Fig. 6 is a detail view of a portion ot' the instrument showing the opening 18 and the lug 19.

Referring more essentially to the annexed illustrations, l and 2 denote the handles (which are adjustable) of the extensible jaws 3 of the device. rfhese handles are provided with various corrugations Il, in order to permit the surgeon to secure a firin grip thereupon, and at Jeach end of the handles shoulders or enlargements 5 are provided, in order to'prevent slipping of the surgeons hands with regard to the handles,

it' such may be the case, but which, to ay certain extent, is prevented by the corrugations.

The handles l and 2 are providethwith elongated hores 6 (Which are rectangular in cross section). Received by these bores are the rear extensions 7 of the jaws 3, said rear extensions are provided with ratchet teeth or corrugations 8, which are designed to cof operate with similar corrugations or ratchet teeth 9 upon a portion of the inner circuinference of the said bores 6, in order `to prevent rearward or forward displacement of the said jaws, after the handles or jaws have once been adjusted. The adjustment ot the handles orjaws may be necessary during one or more periods of the operation, in order that the surgeon may perform such operations with greater eiiciency.

After the jaws or handles are adjusted with regard to one another, they are held in their adjusted position by cani devices or .holding members l0. These cani devices or Patented inne 2d, tutti. I

the cani devices or holding members are in close Contact with the rear extensions of the jaws. The upper or outer faces of ,the levers of the cam devices, when seated in said recesses 15, are disposed flush with the outer tacos oi the 'adjustable handles, in order to .lend no obstructions to the surgeons hand, wl'ien manipulating the instrument.

The handles are so connected with regard to one another that the same may be disconnected, by a. forward movement of one of the handles or a rearward movement of the other handle. 'lhis connection comprises a hook 17 carried by the handle 2, the hook portion of which is designed to penetrate a portion of the elongated bore ofthe opposite handle at the end portion thereof, and as the jaws are oscillated with regard to 011e another, the extremity of the hook portion of the hook extends 'into a recess or opening 18, there being a suitable lug 1S) to prevent disconnection of the handles, during the manipulation of the instrument. This lug lt) extends across the mouth of the recess 1S, in order to perform its proper function, which was above stated.

ln order to hold the aws and the handles in their proper parallel relation during an operation, cach handle is provided with a lateral extension 20. These extensions 20 extend in opposite directions, and in such wise as to engage the opposite handles, there being recesses or eut-away portions 2t upon each handle, opposite that` portion of thel handles from which the lateral extensions project, in order to receive said extensions, so as to prevent displacement of the jaws during their oscillation. These recesses or cnt-away portions 2l are of suticient size as to allow free movementof the said lateral extensions.

ly connecting the handles together in the nntimer above described and shown in the drawing, it renders the pivotal action between the jaws adjustable, which is essentially necessary (hiring certain periods of a snlgical operation, namely, as the operation reaches the lower ring of the pelvis, the handles may be moved forward of the jaws, thereby allowing the 4surgeon to more elliciently complete the operation.

'l`he rear extensions (which penetrate the rectangular bores of 'the handles) are provided with shoulda/rs 22 to engage or be cn gaged by the forward ends of the handles, in order to limit theforward movement ol the handles or the/rearward movement of the jaws.

'lhc 'forward portions of the jaws cross z t a point indicated by the character Q23, there being curved portions aty this junction, and the portions of the jaws beyond their inter section are. l'ormed into curves in directions opposite to those previously mentioned. thereby approximatelyY providing compound curved jaws. fl`he last--mcntioutul curved portions of the jaws are very essential in properly performing the necessary operations` in order to render tirnier hold. ',lhesc curved portions are also formed into loops. which assist niaterially in the\co1nplction aud the Vperformance of the operation.

From the foregoing, the. essential features,

elements and the operation of the device, together with the simplicity thereof, will be clearly apparent.

Having thus fully described the invention, what is claimed as new and useful iszl. In an obstetrieal instrument, a pair of intersecting gripping jaws having rear ex# tensions provided with teeth, a pair of hooked or connected handles adjustably carried by the extensions having means to engage said teeth, means pivotally carried by the handles to cause said extensions to closely engage the first-named means to hold the handles in adjusted positions.

9,. In an obstetrical instrument, a pair of intersecting gripping jaws having rear extensions provided with teeth, a pair of hooked or connected handles adj ustably carried by the extensions having means to engage said teeth, means pivotally carried by the handles to canse said extensions to closely engage the first-named means to hold the handles in adjusted positions, said handles having` lateral extensions extending toward one another to engage the sides of the handles to hold the jaws in parallel relation and provided with recesses to receive said extensions.

3. In an obstetrical instrument, a pair of intersecting gripping jaws having rear extensions provided with teeth, a pair of hooked or connected handles adjnstably carried by the extensions having bores provided with teeth to engage the first-named teeth, said handles having .recesses or openings, levcr-operated cani holding members to engage the `said extensions to cause a thorough co-aetion between the teeth mounted in said recesses or openings. 1. In an obstetrieal instrument, a pair of mterseeting gripping jaws having rear extensions provided with teeth. a pair of hooked or connected handlesl adjustably car rind by the extensions having bores' provided with teeth to engage the tirst-nanred teeth. said handles having recesses or openings, levcnoperated cam holding members to engage the said extensions to cause a thorough co-action between the teeth mount.- cd iu said recesses or openings, and means carried by each handle to engage the opposite handle to hold the jaws and handles in parallel relation. v

5. ln an obstetrical instrtnnent, a pair f intersecting jaws having adjustable handles, one of said handles having a hook, while the other handle isj rovided=with a recess or opening having a lug extending across its inouth to receive said hook, said lug being designed to prevent displaecmenty or disconnect ion ot' the hook with the recess or opening.

t9. lnan ohstetr' )al instrument, a` pair of intersecting jaws having adjustable handles, one of said handles having a hook, while the llO other handle is provided with a recess or In testimony whereof I have signed my opening having a lug extending across its name to this specification in the presence of 10 mouth o receive said hook, said lug beinlg two subscribing witnesses.

designe to prevent disp aeement or disconv A T neetion of the hook with the recess or open- LEONARD GOSHORB' ing, and means carried by each handle to W'itnesses:

engage the opposite handle to hold the jaws E. G. VAN ZAND'I',

and handles in parallel relation. T. J. LOWE. 

